Pneumatic pump.



A. J. HUBBARD & G. A. SWANSON.

PNEUMATIC PUMP.

APPLICATION FILED DEC. 26. 1912,

Patented Sept. 1, 1914.

3 SHEETSSHEET 1.

-- INVENTORS Anon/ Eris THE NORRIS PETERS CO1. FHOTO-LITHQ, WASHINGTUN. D, C.

A. J. HUBBARD & C. A. SWANSON.

PNEUMATIC PUMP.

APPLICATION FILED DEC.26,1912.

1,109,419, Patgnted Sept. 1, 1914 3 SHEETSSHBET 2.

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ATTORNEYS THE NORRIS PETERS c0. FHOTD-LITHti, WASHINGTON. D. c.

A. J. HUBBARD & G. A. SWANSON.

PNEUMATIC PUMP. APPLICATION FILED DEC. 26, 1912.

1,109,419, Patented Sept. 1, 1914.

3 sHEETS-SHEET s.

THE NORRIS PETERS CO5. PHDm-LITFJQ, WASHINGTON, 0. c4

beif gjiorinstancatoprovide apistonwhich 1s "actedlupon by' the compressed air and Tof aZ Z whom it may concern:

' annnnw J.:.HUBBA3D am CARL A. Swanson, lor aaciisonvittn" memes;

' V B MA'r rU rQ- 1 Be itknown that we, ANDREW J. HUBBA D and CARL A, Swanson, citizens of: the United States, and residents of Jacksonville,'in the county of Morgan and State of Illinois;

have made certain new and useful'Improvenients'in Pneumatic Pumps of which the following. a specification. f

"-Ou'rlpresent invention. relates to pnein maticfpumps for the purpose of forcing water'i'rom a well or cistern to any'part of a i building by means of compressed air, without the use of "a storage tank, so that the water willbe freshat alltimes and-ready for use at any point desired, and the object of our'invention is to provide a generally improved construction which will do away with 7 n ack 'js sa phrag ns; and will also do away withjall valved. or'me'chanical parts exposed to thQ weather,

our,construction' and will be: hereinafter specifically referred to," L one specific 1 object which'jlnay effectively operate without the use ,ofthe usual cup leathers. i" t Quri nprloved 'nvention is shown jin the accompanying drawings which form a part "of th s specification, and lIiWlllCll "Figure 1 1s an elevation of our complete apparatus; Fig. 2 is a small vertical section through-the entire mechanism at the upper endsof the water chamber. Fig; 3 is a, plan idlyconnecte'd at theirupp'er ends; These tanks which constitute water chambers, are

, upperjend to a co provided at }tl1eirf lower ends with the usualsubmerged intake or foot valves a I) re spectively and arealsofprovided withjex terlor upwardly extending waterjoutlet pipes and b respectively leading from a I v The water outletpipes a and of are connectedc at their point adjacent their lower ends.

out the-house .or other" building in conneci n fl h 01 improved pump s ut lizsd for use springs and d1an Other objects of our'presentinvention have todo, withcer'tain specific features of I m mon or main pipe C by means which the w'ater taken from the chambers is led to desirable points, throughk j- Specificationoi Iietters ratent. f PatentedS e pt- 1, J; I Application filed'liecember26,}912. Seria1No.738,607..

T The niain airpipe D; which,-

provided with controlling devicesat various points (not shown) leads'qto a, central point of a valve casing this ca'sing having a base 6 providedwi'th ports 6 and 6 these ports being arranged upon opposite sides of a central 'vertical 'aperture e -From'the port a 7 extends abran'ch air supply pipe'D which 1s arranged to communicate at its lower end with a water chamber A, and from the opposite port 6 GXt6IldS a branch air pipe D which is arrangedto communicate'with the water chamb. r 13, both or these pipes-being let into the tops ofthe water chambers as clearly shownin Figs. 1 and 2.

ends 0t which areclosed by caps f and and which is provided with a central side exhaust with which the upwardly extend; ng exhaust pipe 7? communicates; Mount-v comprising a shaft or rod and spaced disks or heads 9 and g, wh charearranged upon opposite sides of theexhaust Slidably disposed wlthin the. valve casing is a i i U ITE FF w Below the base 6 ofthe valve casing E is formed a transverse piston cylinder Rthe ed within the cylinder F is a movable piston '1 valve G5, this valve being a'rranged'to cover [the upper end of the aperture and being connected by means of a rod G totherod G of thepiston, said connecting rod G being arranged through the said aperture '6 which as will be clearly seen ,from Fig.2,communitcates between the interior of vthe slide valve )G and the central portion of the piston cylinder between tllQPlStOIl heads 9 a and g? and consequently communicates with the eX- haustfi; {In its, position as shown in Fig. 2 the'sli'de valve laps the port e withcthe aperture '6 thus registeringthe water chamber 13 with the exhaust f at the time when the port, a; registers with the water-chamber A with the. main air supply pipe D, and in the other and opposite position of the slide valve, action will'bereversed.

"The 'end'sfof the piston roclGr are threaded and thehefads'j or disks gf fare secured m positionaagainst shoulders 9 means of nuts each nd ofthe piston-rod j ust mentioned receiving .an adjustable internally threaded sleeve gt within'which is screwed an adjusting membervg which abutsthe end of'the rod. Adj acent its opposite ends and beyond the extreme positions of the headsor disks 9 and g" l1e piston cylinder communljcates, through ports ft and 'fi, with the up I PEIY QllLdS ,q fpipesll and '5: the-lower: ends of which extend into the upper portions of the water chambers Aand B respectively.

Thus, with the parts in position as shown in Figs. 1 and 2, compressed air'is-admitted through the main air pipe D and through the valve members 6 andbranch pipe D to the upper portion of the water chamber A, the water within which is thereby forced outwardly and upwardly through the outthe piston within the cylinde rfFisdisplaced to the right in Fig, 2 lapping theiport 6 with the exhaust aperture 6 and at the same time registering the port 6? withthe main airpipe D, this action resulting in the alr being led through ports 6 and throughthe branch pipe D to the upper portion of the water chamber 13 from which water 1s forced through pipe 6 to the main water pipe G, at the same time-permitting the a1r accumulated within the water chamber A to exhaust through itspipe D, and through slide valve G. and aperture 6 to tlieexhaust pipe f 'Themeans for accomplishlng this result resides in float members I, one of which is arranged in each of the chambers A and B and provided with an ,upwardlyextending stem 2', projecting and guided wlthin a tube j depending from a'valve casing J securedvupon the lower endof the respective pipe Hand H. Each of the valve casings J has a'side aperture j and avalve seat 3' at the lower end of its respective pipe H and H, the respective float stem 2' having an upper tapering end 2" which is adapted to cooperate with the valve seat 7' and which is held upon the seat as soon as there is suflicientv. wat e r within. the respective water chamberto sustain the float I. As soon thereafter, as the water'level in one of the chambers is lowered to such anextentthat its float- Inlay drop, the valve i will be moved from its seat and the air which is being forced within the water chamber may find its way through the opening. j and the valve and upwardly throughthe pipe H or H" and'the piston cylinder port f or f whereby to force the piston toward the-rela tivelyi opposite end of the piston cylinder.

Thus while one of thewaterchambers A and B is being acted upon by theair to discharge its water theother water chamber is taking in water through its ioot valve (1 orb; The operation above described may thus be con tinued and the water chambers alternately discharged to supply 'the"demand for Water, the shifting from one chamber to the other being entirelyautomatic as described. After the piston has been moved toward one end of the piston cylinder there will be considerable air pressure confined between one end thereof and the end of the cylinder and considerable difl iculty'might be experienced communicate through the such pipesI-I and H 'which the said main a1r cylinderF and at the lower portion thereof,

which port thus communicates with the exhaust f and its pipe f This port f is in communication with laterally extending pipes K and K, which'pipes respectively sides of the pipes H andH and with depending tubes in In each of the pipes end of the tube is is movable adouble ended valve member is, theupper end of which is tapered so as to close the lower] end of the tube 70 and the lower end of which is formed toseat upon the valve seat It. Thuswhei'i air is admitted through the lower end of either of the pipes H and H through the action of the float valve as, before described, the valve member is within the respective pipe is raised and its upper end closes the lower end of the tube is, permitting the air to pass up into the piston cylinder without oppo sition. .On the other hand, when the piston is moved toward one end of the piston cylinder, the previously supplied air to that end of the piston is forced down into the respec tlve pipe H andH and causes the valve member 74 to lower and seat upon theseat 7t. The air is then free topass up through the tube 70 and thence through the respective pipe Kand K and the port f into the central portion of the piston chamber and thence upwardly through the exhaust f We claim: i v I f1. In 'a pneumatic pump, the combination 0 a piston cylinder havinga central exhaust, a piston therein comprising spaced heads upon opposite sides of the exhaust, conneca pair of water chambers,having sub- Cmergedfoot valves and water outlet pipes,

tions between the cylinder ends andthe upp er portions of the water chambers and having valves normally closing the same, float members within the water chambers and controlling the said valves, a valve chamber adjacent the piston chamber and carrying a central port communicating with municating with the upper portions oili'ithe and side ports conithe cylinder exhaust, water chambers, an air supply pipe lead- .ing to the valve chamber, and a slide valve having connection with the piston and movable therewith to alternately register one of the valve side ports with theexhaust;

' 2. In a pneumaticpump, the combination of a pair of water chambers having sub merged foot valves andwater outlet pipes, a main air supply pipe, a valve casing with pipe communicates and which is provided with said ports branch air pipes leading from said ports to the upper portions of the water chainhaving intermediate valve exhaust port, an air bers, said casing also having the r central a casing and the upper portions of the water be admitted to the actuating member toward opposite ends thereof, "thejlower,

chambers whereby air may the casing to move ends of said connections having valve seats, and floats arranged 1n the water chambers and having upwardly pro ectmg stems pro vided with tapered upper ends formmg valves and adapted to cooperate with the said seats.

3. In a pneumatic pump, the combination of a pair of water chambers, having submergedfoot valves and water outlet pipes, a piston cylinder having a central exhaust, a piston therein comprising spaced heads upon opposite sides of the exhaust, connecting'pipes between the cylinder ends and the upper portions of the water chambers, andseats and side ports above said seats, tubes depending in said pipes and having their upper :ends communicating with bled ended valvemembers movable between Copies of this patent may be obtained. for five cents each, by addressing Washington, .D. C.

controlling valve movsaid side vports, dousaid valve seats and the lower ends of the tubes and'adapted to cooperate therewith,

said connecting pipes also having lower valves, fioat' members within the water chambers and controlling the said lower valves, a valve chamber adjacent the piston chamber and having'a central port communicating with a cylinder exhaust and side ports communicating with the upper portlOIlS of the water chambers, an alr supply pipe leading to the said valve chamber, and a slide valve having connection with the piston and movable therewith to alternately register one of the valve side ports with the exhaust; a

4:. In a device of the character described, a piston comprising a stem having threaded end portions, heads secured upon said stem in spaced relation, adjusting sleeves which are alternately threadedand adapted to be screwedupon the threaded endnporg tions of thestem to externally threaded adjusting nuts adapted to be screwed within the said sleeves and to abut the ends of the stem of the piston, substantially as'describec. ANDREW J, HUBBARDQ CARLWA; SWANSON. W'itnessesz i e C. A. BOR FF, C. W. BOSTON;

the Commissioner of Eatents,

selected positions, and 

